1143653343 has 16 divisors (see below), whose sum is σ = 1759000320. Its totient is φ = 647407296.

The previous prime is 1143653321. The next prime is 1143653347. The reversal of 1143653343 is 3433563411.

It is not a de Polignac number, because 1143653343 - 2²¹ = 1141556191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143653347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 252238 + ... + 256731.

It is an arithmetic number, because the mean of its divisors is an integer number (109937520).

Almost surely, 2^1143653343 is an apocalyptic number.

1143653343 is a deficient number, since it is larger than the sum of its proper divisors (615346977).

1143653343 is a wasteful number, since it uses less digits than its factorization.

1143653343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509086.

The product of its digits is 38880, while the sum is 33.

The square root of 1143653343 is about 33817.9440977715. The cubic root of 1143653343 is about 1045.7586557656.

The spelling of 1143653343 in words is "one billion, one hundred forty-three million, six hundred fifty-three thousand, three hundred forty-three".